A post shared by John Isner (@johnrisner) on May 1, 2019 at 10:33am PDT

Isner posted a picture of the occasion on his Instagram and said, “I always thought gender reveals are kinda goofy and cheesy because, well, they are. However, I can’t recommend it enough. It was so much fun.”

While we’re on it, here are three interesting facts about the tennis ace.

If not tennis, NBA

John Isner with NBA legend Bob Mcadoo. (Source: Instagram/johnrisner)

John played basketball until he was in the 9th grade. He has revealed before that if it wasn’t for tennis, he would definitely take up basketball as his career. The player had also revealed that his idol was former NBA star, Karl Malone.

WWE forever!

Isner with WWE star Roman Reigns. (Source: Instagram/johnrisner)

Isner is very active on Twitter and one of his favourite things to talk about is the WWE. He has been ever so mesmerized by the sport that he has been diligently following every development in the WWE. He knows everything there is to know about, both current and seasoned wrestlers.

‘Grandpa’

John Isner’s nickname is ‘Grandpa’. (Source: Instagram/johnrisner)

Isner is known to be very slow in things personally. The tennis champ is nicknamed ‘Grandpa’ because of this reason. Isner said, “I move slow. It’s not that I’m late; I’m methodical. If I have to get ready for an eight o’clock dinner, I start at seven. I don’t shower for twenty minutes, I just take my time.”